| Age | Commit message (Collapse) | Author |
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ata_host_alloc_pinfo() assigns the host pointer to the
struct device * drvdata, do not assign it a second time.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
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There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This avoid the need to always translate between the two in ata_prot_flags
and generally cleans up the taskfile protocol usage.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Add a new taskfile protocol ATA_PROT_NCQ_NODATA to handle
ATA NCQ NO-DATA commands correctly.
And fixup ata_scsi_zbc_out_xlat() to use it.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
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There is a duplication in the debug messages when accessing SCR registers.
Remove duplication to make the messages neat.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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DMA operates with physical addresses which is not exactly the same as ioremap()
returns.
Introduce variable to keep physical address of the SATA FIFO register and
supply it when prepare DMA channel.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This simplifies error handling and cleanup by using devm to manage
IO mappings.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This consolidates the reads from each of the if/else branches
to one place making the code a lot nicer to look at.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Rename the register access macros and use standard _relaxed()
ops instead of __raw variants with explicit byte swapping.
The original driver used the ppc-specific in/out_le32(). When it
was adapted to other systems, these were added to the driver
under ifdefs. However, those names are not defined as macros on
ppc, so it ended up replacing them there as well with altered
semantics. This patch restores the original semantics on ppc and
makes the accesses no less strict on other systems.
Also fixes too many sparse warnings to count.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Convert dmaengine_terminate_all() calls to synchronous and asynchronous
versions where appropriate.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The pointer to the mmio register base is missing the __iomem
annotation. Fix this.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The (void *__iomem) cast is wrong. Change the target type of the
"base" pointer to void __iomem instead and drop the cast.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Casting a pointer to unsigned long only to immediately cast it back
to a pointer makes no sense. Fix this.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The sata_dwc_qc_prep() does nothing. Use the default ata_noop_qc_prep
instead.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Here we refactor HOSTDEV{P}_FROM_*() macros to fit one line and fix the
definition of HSDEV_FROM_HSDEVP() where wrong name of the parameter waas used.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This moves all global data into the driver private struct, thus
permitting multiple devices of this type to be used.
The core_scr_read/write() functions are replaced with equivalent
calls to the existing sata_dwc_scr_read/write().
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This adds support for powering on an optional PHY when activating the
device.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Currently this driver only works with a DesignWare DMA engine which it
registers manually using the second "reg" address range and interrupt
number from the DT node.
This patch makes the driver instead use the "dmas" property if present,
otherwise optionally falling back on the old way so existing device
trees can continue to work.
With this change, there is no longer any reason to depend on the 460EX
machine type so drop that from Kconfig.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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ata_sff_qc_issue() can't handle DMA commands and thus we have to avoid it for
them. Do call ata_bmdma_qc_issue() instead for this case. Note that the former
one distinguishes PIO and DMA mode and behaves accordingly.
Suggested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Calling dmaengine_prep_slave_sg() for non-dma ATA commands is
unnecessary at best and could be harmful if the dma driver reacts
badly to this. It also causes this driver to print a bogus error
message in these cases.
This patch changes sata_dwc_qc_issue() to only do the dma setup
for dma commands and also reports an error to libata if if fails.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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In the original code the DMA is always a flow controller. Set this accordingly
in updated code.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The burst size as defined by DMAengine API is in items of address width. Derive
burst size from AHB_DMA_BRST_DFLT (64 bytes) by dividing it to
DMA_SLAVE_BUSWIDTH_4_BYTES (4 bytes) that gives us 16 items.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The original code states:
Make sure a LLI block is not created that will span 8K max FIS
boundary. If the block spans such a FIS boundary, there is a chance
that a DMA burst will cross that boundary -- this results in an error
in the host controller.
Since we have switched to generic DMAengine API we satisfy above by setting
dma_boundary value to 0x1fff.
Suggested-by: Mans Rullgard <mans@mansr.com>
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This patch fixes Machine Check "Data Write PLB Error" which happens
when libata-sff's ata_sff_dev_select is trying to write into the
device_addr in order to select a drive. However, SATA has no master
or slave devices like the old ATA Bus, therefore selecting a
different drive is kind of pointless.
Data Write PLB Error
Oops: Machine check, sig: 7 [#1]
PowerPC 44x Platform
Modules linked in:
CPU: 0 PID: 508 Comm: scsi_eh_0 Not tainted 4.6.0-rc3-next-20160412+ #10
[...]
NIP [c027e820] ata_sff_dev_select+0x3c/0x44
LR [c027e810] ata_sff_dev_select+0x2c/0x44
Call Trace:
[cec31cd0] [c027da00] ata_sff_postreset+0x40/0xb4 (unreliable)
[cec31ce0] [c027a03c] ata_eh_reset+0x5cc/0x928
[cec31d60] [c027a840] ata_eh_recover+0x330/0x10bc
[cec31df0] [c027bae0] ata_do_eh+0x4c/0xa4
[...]
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This lock is already taken in ata_scsi_queuecmd() a few levels up the
call stack so attempting to take it here is an error. Moreover, it is
pointless in the first place since it only protects a single, atomic
assignment.
Enabling lock debugging gives the following output:
=============================================
[ INFO: possible recursive locking detected ]
4.4.0-rc5+ #189 Not tainted
---------------------------------------------
kworker/u2:3/37 is trying to acquire lock:
(&(&host->lock)->rlock){-.-...}, at: [<90283294>] sata_dwc_exec_command_by_tag.constprop.14+0x44/0x8c
but task is already holding lock:
(&(&host->lock)->rlock){-.-...}, at: [<902761ac>] ata_scsi_queuecmd+0x2c/0x330
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(&host->lock)->rlock);
lock(&(&host->lock)->rlock);
*** DEADLOCK ***
May be due to missing lock nesting notation
4 locks held by kworker/u2:3/37:
#0: ("events_unbound"){.+.+.+}, at: [<9003a0a4>] process_one_work+0x12c/0x430
#1: ((&entry->work)){+.+.+.}, at: [<9003a0a4>] process_one_work+0x12c/0x430
#2: (&bdev->bd_mutex){+.+.+.}, at: [<9011fd54>] __blkdev_get+0x50/0x380
#3: (&(&host->lock)->rlock){-.-...}, at: [<902761ac>] ata_scsi_queuecmd+0x2c/0x330
stack backtrace:
CPU: 0 PID: 37 Comm: kworker/u2:3 Not tainted 4.4.0-rc5+ #189
Workqueue: events_unbound async_run_entry_fn
Stack : 90b38e30 00000021 00000003 9b2a6040 00000000 9005f3f0 904fc8dc 00000025
906b96e4 00000000 90528648 9b3336c4 904fc8dc 9009bf18 00000002 00000004
00000000 00000000 9b3336c4 9b3336e4 904fc8dc 9003d074 00000000 90500000
9005e738 00000000 00000000 00000000 00000000 00000000 00000000 00000000
6e657665 755f7374 756f626e 0000646e 00000000 00000000 9b00ca00 9b025000
...
Call Trace:
[<90009d6c>] show_stack+0x88/0xa4
[<90057744>] __lock_acquire+0x1ce8/0x2154
[<900583e4>] lock_acquire+0x64/0x8c
[<9045ff10>] _raw_spin_lock_irqsave+0x54/0x78
[<90283294>] sata_dwc_exec_command_by_tag.constprop.14+0x44/0x8c
[<90283484>] sata_dwc_qc_issue+0x1a8/0x24c
[<9026b39c>] ata_qc_issue+0x1f0/0x410
[<90273c6c>] ata_scsi_translate+0xb4/0x200
[<90276234>] ata_scsi_queuecmd+0xb4/0x330
[<9025800c>] scsi_dispatch_cmd+0xd0/0x128
[<90259934>] scsi_request_fn+0x58c/0x638
[<901a3e50>] __blk_run_queue+0x40/0x5c
[<901a83d4>] blk_queue_bio+0x27c/0x28c
[<901a5914>] generic_make_request+0xf0/0x188
[<901a5a54>] submit_bio+0xa8/0x194
[<9011adcc>] submit_bh_wbc.isra.23+0x15c/0x17c
[<9011c908>] block_read_full_page+0x3e4/0x428
[<9009e2e0>] do_read_cache_page+0xac/0x210
[<9009fd90>] read_cache_page+0x18/0x24
[<901bbd18>] read_dev_sector+0x38/0xb0
[<901bd174>] msdos_partition+0xb4/0x5c0
[<901bcb8c>] check_partition+0x140/0x274
[<901bba60>] rescan_partitions+0xa0/0x2b0
[<9011ff68>] __blkdev_get+0x264/0x380
[<901201ac>] blkdev_get+0x128/0x36c
[<901b9378>] add_disk+0x3c0/0x4bc
[<90268268>] sd_probe_async+0x100/0x224
[<90043a44>] async_run_entry_fn+0x50/0x124
[<9003a11c>] process_one_work+0x1a4/0x430
[<9003a4f4>] worker_thread+0x14c/0x4fc
[<900408f4>] kthread+0xd0/0xe8
[<90004338>] ret_from_kernel_thread+0x14/0x1c
Fixes: 62936009f35a ("[libata] Add 460EX on-chip SATA driver, sata_dwc_460ex")
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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We pass struct dw_dma_chip to dw_dma_probe() anyway, thus we may use it to
pass a platform data as well.
While here, constify the source of the platform data.
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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The source and destination masters are reflecting buses or their layers to
where the different devices can be connected. The patch changes the master
names to reflect which one is related to which independently on the transfer
direction.
The outcome of the change is that the memory data width is now always limited
by a data width of the master which is dedicated to communicate to memory.
The patch will not break anything since all current users have the same data
width for all masters. Though it would be nice to revisit avr32 platforms to
check what is the actual hardware topology in use there. It seems that it has
one bus and two masters on it as stated by Table 8-2, that's why everything
works independently on the master in use. The purpose of the sequential patch
is to fix the driver for configuration of more than one bus.
The change is done in the assumption that src_master and dst_master are
reflecting a connection to the memory and peripheral correspondently on avr32
and otherwise on the rest.
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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We shuffled some code around in 8b3444852a2b ('sata_dwc_460ex: move to
generic DMA driver') an accidentally deleted a tab character here. It
causes a Smatch warning "if statement not indented".
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This patch re-uses hsdev->dev which is allocated on heap. Therefore, the
private structure, which is global variable, is reduced by one field.
In one case ap->dev is used and there it seems to be right decision.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The SATA implementation based on two actually different devices, i.e. SATA and
DMA controllers.
For Synopsys DesignWare DMA we have already a generic implementation of the
driver. Thus, the patch converts the code to use DMAEngine framework and
dw_dmac driver.
In future it will be better to split the devices inside DTS as well like it's
done on other platforms.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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It it better to have full message on one line. It simplifies to search for line
in the code by message when debugging.
Note that the lines which will be removed by sequential patch are not fixed
here.
There is no functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The patch converts ->probe() to use devm_kzalloc that simplifies error path.
Note that ata_host_alloc_pinfo() has been using device resources already.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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There is no need to print a message about failure of memory allocation. The
caller will get an error code and may print the same.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This patch fixes the style of usage of a node pointer. There is no functional
change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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There are a lot sparse warnings. Most of them related to __iomem keyword which
sometimes absent when it's needed and vise versa.
The patch fixes most of the warnings.
While at it, remove the redundant sata_dwc_sht.can_queue
initialization to ATA_DEF_QUEUE.
tj: Added description about ATA_DEF_QUEUE init removal.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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To test how the driver could be compiled in the non-native environment let's
enable COMPILE_TEST for it. It would be useful for further work.
This patch enables COMPILE_TEST for the driver and fixes compilation errors on
at least x86 platforms.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Driver core sets it to NULL upon probe failure or release.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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DMA mapped IO should be unmapped on the error path in probe() and
unconditionally on remove().
Fixes: 62936009f35a ([libata] Add 460EX on-chip SATA driver, sata_dwc_460ex)
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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A platform_driver does not need to set an owner, it will be populated by the
driver core.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Unreferenced casts of void * types are unnecessary so remove them.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>. Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.
Cc: linux-ide@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Commit b5b4bb3f6a11f9 (of: only include prom.h on sparc) removed implicit
includes of of_*.h headers by powerpc's prom.h. Some components were
missed in initial clean-up patch, so add the necessary includes to fix
powerpc builds.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-ide@vger.kernel.org
Cc: linux-crypto@vger.kernel.org
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Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Only channel 0 is currently support and the driver code is fixed on
channel 0. This patch lets device node specifying dma-channel in case
it is not 0. If no dma-channel property is specified, channel 0 is
used as default.
Signed-off-by: Thang Q. Nguyen <tqnguyen@apm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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The hardreset operation is currently not supported. This causes
sometime the SATA driver does cause kernel crash because of
none-determined state.a This patch will fix the issue.
Signed-off-by: Thang Q. Nguyen <tqnguyen@apm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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This patch converts the drivers in drivers/ata/* to use the
module_platform_driver() macro which makes the code smaller and a bit
simpler.
Cc: Viresh Kumar <viresh.kumar@st.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Sylvain Munaut <tnt@246tNt.com>
Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Mark Miesfeld <mmiesfeld@amcc.com>
Cc: Ashish Kalra <ashish.kalra@freescale.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Currently, error handling code in this function calls the function
sata_dwc_port_stop, but this function has essentially no effect if hsdevp
has not been stored in ap, which is the case throughout this function. The
only effect is to print a debugging message including ap->print_id.
The code is rewritten to not call sata_dwc_port_stop, but instead to jump
to a local label that prints the original error message and the print_id
information. In the case where hsdevp has been already allocated (but not
yet stored in ap), this value is freed as well.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@exists@
local idexpression x;
statement S,S1;
expression E;
identifier fl;
expression *ptr != NULL;
@@
x = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
when != if (...) { <+...kfree(x)...+> }
when any
when != true x == NULL
x->fl
...>
(
if (x == NULL) S1
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if (...) { ... when != x
when forall
(
return \(0\|<+...x...+>\|ptr\);
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* return ...;
)
}
)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Tejun Heo <tj@kernel.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fixed hsdev memleak on sata_dwc_probe() error.
As dma_dwc_exit() can be called multiple times without sata_dma_regs and
irq_dma changes, it might lead to double free on sequential
dma_dwc_exit() calls. So, zero these fields after free calls.
Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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The patch below fixes a typo.
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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